#pragma once
#include <iostream>
#include "Comm.hpp"

class Init
{
public:
    Init()
    {
        umask(0);
        int n = ::mkfifo(gpipefile.c_str(),gmode);
        if(n < 0)
        {
            std::cerr << "mkfifo error" << std::endl;
            return;
        }
        std::cout << "mkfifo success" << std::endl;
    }
    ~Init()
    {
        int n = ::unlink(gpipefile.c_str());
        if(n < 0)
        {
            std::cerr << "unlink error" << std::endl;
            return;
        }
        std::cout << "unlink success" << std::endl;
    }
};

Init init;


class Server
{
public:
    Server():_fd(gdfaultfd)
    {

    }
    bool OpenPipe()
    {
        _fd = ::open(gpipefile.c_str(),O_RDONLY);
        if(_fd < 0)
        {
            std::cerr << "open error" << std::endl;
            return false;
        }
        return true;
    }
    // std::string* : 输出型参数
    // const std::string& : 输入型参数
    // std::string& : 输入输出型参数
    int RecvPipe(std::string* out)
    {
        char buffer[gsize];
        ssize_t n = ::read(_fd,buffer,sizeof(buffer) - 1);
        if(n > 0)
        {
            buffer[n] = 0;
            *out = buffer;
        }
        return n;
    }
    void ClosePipe()
    {
        if(_fd >= 0)
        {
            close(_fd);
        }
    }
    ~Server()
    {
        
    }
private:
    int _fd;
};


